SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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CO ₂ (carbon dioxide)
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Sunlight
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H ₂O (water)
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O ₂ (oxygen)
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Detailed explanation-1: -Photosynthesis is the process of synthesis of food by plants using carbon dioxide and water in presence of sunlight and chlorophyll. Oxygen (O2) is released during the process as a waste product. Hence, oxygen is not essential for the process of photosynthesis.
Detailed explanation-2: -To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.
Detailed explanation-3: -As carbon dioxide is an input, so higher concentration of carbon dioxide helps in increasing the rate of photosynthesis. Oxygen is mainly released as a by-product by photolysis of water and released in the atmosphere. Thus, it is not required for photosynthesis.
Detailed explanation-4: -Plants do not need oxygen for photosynthesis. Instead, oxygen is produced during photosynthesis. Plants need oxygen for respiration (take in oxygen, give off carbon dioxide) the same way that animals do.
Detailed explanation-5: -Complete answer: NADH is not a product of light reaction of photosynthesis.